[GRASS-user] How to add calculated length data to new colum

[Hamish]

[greetings from the road]


Shimada wrote:
> I want to add calculated data to vector file.
> 
> for example, I have vector file (sample_overlay).
> 
> v.report map=sample_overlay option=length
> 
> cat|a_cat|a_HIGHT|b_cat|b_row|b_col|length
> 1|11|L|1473|30|23|1|21.3047451513242
> 2|12|H|1829|37|29|2|19.9524518420696
> 
> I want to add this length data to sample_overlay.
> 
> So, I tried to add new colum to sample_overlay.
> 
> v.db.addcol sample_overlay columns="length double
> precision"
> 
> How to add this length data to new colum of sample_overlay?

v.to.db


Hamish